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From "Jason Kania (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9216) NullPointerException (NPE) during Compaction Cache Serialization
Date Mon, 20 Apr 2015 20:02:58 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14503519#comment-14503519
] 

Jason Kania commented on CASSANDRA-9216:
----------------------------------------

Unfortunately, the system log was deleted as the /var/log partition filled up when the database
fell over. I only got this Exception because of another process monitoring the logs for exceptions
and sending them off board. I will be monitoring the system directly so if the problem occurs
again, I will capture it.

> NullPointerException (NPE) during Compaction Cache Serialization
> ----------------------------------------------------------------
>
>                 Key: CASSANDRA-9216
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9216
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: Debian linux wheezy patch current
>            Reporter: Jason Kania
>              Labels: Compaction, NPE
>             Fix For: 2.1.5
>
>
> In case this hasn't been reported (I looked but did not see it), a null pointer exception
is occurring during compaction. The stack track is as follows:
> {code}
> ERROR [CompactionExecutor:50] 2015-04-20 13:42:43,827 CassandraDaemon.java:223 - Exception
in thread Thread[CompactionExecutor:50,1,main]
> java.lang.NullPointerException: null
>         at org.apache.cassandra.service.CacheService$KeyCacheSerializer.serialize(CacheService.java:475)
~[apache-cassandra-2.1.4.jar:2.1.4]
>         at org.apache.cassandra.service.CacheService$KeyCacheSerializer.serialize(CacheService.java:463)
~[apache-cassandra-2.1.4.jar:2.1.4]
>         at org.apache.cassandra.cache.AutoSavingCache$Writer.saveCache(AutoSavingCache.java:274)
~[apache-cassandra-2.1.4.jar:2.1.4]
>         at org.apache.cassandra.db.compaction.CompactionManager$11.run(CompactionManager.java:1152)
~[apache-cassandra-2.1.4.jar:2.1.4]
>         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) ~[na:1.7.0_75]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:262) ~[na:1.7.0_75]
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
~[na:1.7.0_75]
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
[na:1.7.0_75]
>         at java.lang.Thread.run(Thread.java:745) [na:1.7.0_75]{code}



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